摘要
乌江特大桥主拱肋采用了计算跨径475m的上承式钢管混凝土变截面桁架拱,拱顶截面主弦管中心径向高度7m,拱脚截面主弦管中心径向高度10m,拱截面径向高度按二次抛物线变化,拱肋节段采用立式运输方式,船舶定位采用岸边锚泊定位及定位船辅助锚泊定位2种定位方法。结合乌江特大桥施工实例,阐述大桥拱肋节段立式运输及锚泊定位技术。
The main arch rib of Wujiang River Bridge adopts a deck concrete⁃filled steel tubular variable cross⁃section truss arch with a calculated span of 475m.The radial height of the main chord tube center of the vault section is 7m,and the radial height of the main chord tube center of the arch foot section is 10m.The radial height of the arch section changes in accordance with a quadratic parabola.The arch rib section adopts the vertical transportation mode,and the ship positioning adopts two positioning methods,shore mooring positioning and positioning⁃ship auxiliary mooring positioning.Combined with the construction example of Wujiang River Bridge,both the vertical transportation and the mooring positioning technology of the arch rib segment of the bridge are expounded.
作者
郑永
陈柯
ZHENG Yong;CHEN Ke(Zhongjiao Shitong(Chongqing)Heavy Industry Co.,Ltd.,Chongqing 402160,China)
出处
《施工技术（中英文）》
CAS
2023年第21期94-98,共5页
Construction Technology
基金
中交集团科技研发项目:山区大跨度全装配式钢管砼拱桥结构体系设计及智慧建养关键技术研究及示范(KJYF-2022-A-01J)。
关键词
桥梁
钢管
拱肋
定位
运输
bridges
steel tube
arch rib
positioning
transport
